afterEach(() => {
   onPositionChangeSubscription.unsubscribe();
   document.body.removeChild(scrollable);
 });

 ngOnDestroy(): void {
   this.routerStateDataSubscription.unsubscribe();
 }

 ngOnDestroy() {
   this.actionsSubscription.unsubscribe();
 }

	public ngOnDestroy() : void {

		( this.paramMapSubscription ) && this.paramMapSubscription.unsubscribe();

	}

 onCommunicationManagerStopping() {
     super.onCommunicationManagerStopping();
     this._advertiseSubscription && this._advertiseSubscription.unsubscribe();
 }

 ngOnDestroy() {
   this._intlSubscription.unsubscribe();
   this._focusMonitor.stopMonitoring(this._element.nativeElement);
 }

 public ngOnDestroy(){
   this.paramsSubscription.unsubscribe();
 }

 afterEach(() => {
   httpClient.verify();
   subscription.unsubscribe();
 });

 ngOnDestroy() {
     this.sub.unsubscribe()
 }

 ngOnDestroy() {
   if (this.sub != null) {
     this.sub.unsubscribe();
   }
 }